may have been the pending use of Portable People Meters (PPM) in determining ratings in the San Antonio market. Although Cox have had success with FM talk stations in Atlanta, Orlando, Jacksonville, Tulsa and Dayton, the talk format suffered from low ratings and did not survive a full year. World Class Rock On April 1, 2010 at 12 p.m., the station began stunting with the sound of a clock ticking, with a voice telling listeners to tune in on April 5 at 5 p.m. to find out the station's new format. At that time, a classic-based Adult Album Alternative format was launched as "X106.7, World Class Rock," with "Take Me to the River" by The Talking Heads being the first song played. The station did not use DJs, and was automated like KJXK, but focused on classic alternative and classic rock hits, and was not as hard-edged as KZEP, which focused on harder classic titles from the rock era. Most of KPWT's talk lineup moved to Clear Channel Communications-owned KRPT on April 15. Five days later, on April 20th, KPWT changed call letters to KTKX to go with the "X106.7" branding. This was not the first time the AAA format was tried in San Antonio; the first was KMFR "103.7 Mighty Fine Rock" from 2001-2004 (now KAHL-FM airing Adult Standards). Classic Rock On November 15, 2010, KTKX turned to a straight-ahead classic rock format to compete directly with rival KZEP. KTKX re-positioned itself as "San Antonio's Most Commercial Free Classic Rock." Throughout June 2014, Cox-owned stations in Orlando (WCFB's HD-2 feed) and Atlanta (WTSH) were heard flipping to alternative rock using the "X" name. Orlando saw the debut of "X107.3" and "X107.1" premiered in Atlanta, and each was called "Orlando's/Atlanta's New Alternative." Prior to this, Cox owned "X"-named alternative formats in Tampa Bay (WSUN-FM) and Jacksonville (WXXJ). Because of these stations, rumors spread that San Antonio would be next in line to "Join the Revolution" and switch "X106.7" to what would've been the market's first mainstream alternative station. However, on August 8, competitor KZEP moved its classic rock format to the station's HD-2 feed and 93.3 translator, as the main channel flipped to a Rhythmic Contemporary format as "Hot 104.5." In response, KTKX dropped the "X" name that same weekend and simply called itself "106.7, The Only Classic Rock Station You Can Hear Everywhere in San Antonio." On August 15,